Implement strpbrk() Function in c

Insert Character Word in any Desired Location in a String

#include 

#include 

#include 

void main()

{

    int i, j, count = 0, pos, flag = 0;

    char s1[100], s2[10], s3[100];

    char *ptr1, *ptr2, *ptr3;

    clrscr();

    printf("\nenter the String:");

    scanf(" %[^\n]s", s1);

    printf("\nenter the string to be inserted:");

    scanf(" %[^\n]s", s2);

    printf("\nenter the position you like to insert:");

    scanf("%d", &pos);

    ptr1 = s1;

    ptr3 = s3;

    for (i = 0, j = 0;*ptr1 != '\0'; ptr1++, i++, j++, ptr3++)

    {

        s3[j] = s1[i];

        if (*ptr1 == ' ' && flag != 1)

            ++count;

        if (flag != 1 && count == pos - 1)

        {

            flag = 1;

            for(ptr2 = s2;*ptr2 != '\0'; ptr2++)

            {

                s3[++j] = *ptr2;

                ptr3++;

            }

            s3[++j] = ' ';

            ptr3++;

        }

    }

    s3[j] = '\0';

    printf("\nthe string after modification is\n\n %s\n", s3);

 getch();

}

Output

enter the string:Welcome to Sanfoundry's C Programming Class,  Welcome Again to C Class!

enter the word to insert:Sanfoundry's

enter the position you like to insert:3

the string after modification is

Welcome to Sanfounsry's Sanfoundry's C Programming Class,  Welcome Again to C Class!

Find the First Occurence of the any Character of String2 in String1

#include 

#include 

void main()

{

    char s1[50], s2[10];

    int i, flag = 0;

    char *ptr1, *ptr2;

    clrscr();

    printf("\nenter the string1:");

    scanf(" %[^\n]s", s1);    

    printf("\nenter the string2:");

    scanf(" %[^\n]s", s2);

    for (i = 0, ptr1 = s1;*ptr1 !=  '\0';ptr1++)

    {

        i++;

        for (ptr2 = s2; *ptr2 != '\0';ptr2++)

        {

            if (*ptr1  ==  *ptr2)

            {

                flag = 1;

                break;

            }

        }

        if (flag  ==  1)

            break;

    }

    if (flag  ==  1)

        printf("\nfirst occurance of character of string2 in string1 is at position:%d and character is %c", i, *ptr2);

    else

        printf("\nnone of the characters of string1 match with mone of characters of string2");

getch();

}

Output

enter the string1:C Programming Class

enter the string2:rnp

first occurance of character of string2 in string1 is at position:3 and character is p

Implement strpbrk() Function

         #include 

        #include 

        char* strpbrk(char *, char *);

       int main()

       {

         char string1[50], string2[50];

         char *pos;

          clrscr()l

         printf("Enter the String:\n");

       scanf(" %[^\n]s", string1);

        printf("\nEnter the Character Set:\n");

       scanf(" %[^\n]s", string2);

       pos=strpbrk(string1, string2);

       printf("%s", pos);

       }

       char* strpbrk(char *string1, char *string2)

       {

       int i, j, pos, flag = 0;

        for (i = 0; string1[i] != '\0';i++);

         pos = i;

        for (i = 0;string2[i] != '\0';i++)

       {

          for (j = 0;string1[j] != '\0';j++)

                    {

                     if (string2[i] == string1[j])

                      {

                      if ( j <= p1)

                    {

                       pos = j;    

                      flag = 1;    

                     }

             }

           }        

       }

       if (flag == 1)

        {

         return &string1[pos];

          }

        else

          {

           return NULL;

         }

    getch();

   }

Output

Enter the String:

C programming Class

Enter the Character Set:

mp

programming Class